What is that dent in the bottom of a bottle of wine?
The dent on the bottom of a wine bottle is called a punt. It is found on the bottom of Champagne/sparkling wine bottles and some still wine bottles. The main purpose of the rounded bottom or punt is to strengthen the bottle–especially important for sparkling wines–but punts also can be useful for collecting sediment and for pouring wine (it provides a place to put your thumb).
